Heater



June 15 ,192e. 1,588,979

G. J. MEAD ET AL HEATER Filed June 1, 1921 GEORGE. J MEAD GEORGE L.. MATHEP INVENTORS Patented June 15, 1926.

UNITED STATES PATENT OFFICE.

GEORGE J'WMEAD-AND GEORGE L. MATHER, F MILWAUKEE, WISCONSIN, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE FISK RUBBER COMPANY, OF CHICOPEE FALLS, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

HEATER.

()ur invention relates to heaters and the principal object of our invention is to provide a new and improved heater. In the drawings accompanying this specification I and forming a part thereof we have shown, for purposes of illustration, one form which our invention may assume and in these drawings thesingle figure represents a vertical section of this illustrative form of our in- 16 vention.

Referring to the drawings we have shown a more or ss usual type of heater consisting of a shell 11, a top 12, and a base 13.

The shell 11 and base 13 are, however, both continuous and meet in a fluid tight joint and the shell 11 is provided with a smooth inner surface. The usual ram cylinder and ram plunger are omitted and the ram spider is resent in the form of a piston 14 making 90 fluid tight connection with the inside of the shell 11 in any suitable manner as by means of packing 15 and dividing the heater .into a mold chamber 16 and a fluid pressure chamber 17 to which fiuid may be admitted 95 in any desired manner as by means of a connection 18. In order to reduce radiation between the chambers 16 and 17 the piston 14 may be provided with a hollow cap 19 filled with heat insulating material 20.

The heater herein shown is also provided with a spiral conduit 21 entering through a channel 22 in the upper portion of the heater shell and having its free end resting on the piston 14. The conduit 21 serves to carry away the condensation accumulating above the piston 14 and the channel 22 acts as a vessel to carry away the cooling water in roduced into the mold chamber after vulcanization and expelledas the piston 14 rises.

It will be obvious from the above description that ,we utilize the ram spider as a piston and in this manner utilize the lower normally unused portion of the heater as the fluid pressure chamber by which tosecure the desired pressure on the molds within the chamber 16 and by this arrangement obviate 1921. Serial No. 474,214.

the necessity of the usual ram cylinder and ram plunger and thereby not only apprehave provided for the removal from the mold chamber of both the condensation and the cooling water; The disclosure herein,- however, is illustrative only and our invention is, of course, not limited thereto.

\Ve claim:

1. In a heater, a flexible conduit having "a free end adjacent the plane occupied'bv the bottom of the lowest mold.

2. In a heater, a shell provided near the upper end thereof with a channel adapted to receive and carry (is the cooling water.

3. In a heater, a ram piston comprising a housing containing heat insulating material and provided with a cover removable to give access to said heat insulating material.

4. I11 a heater, a flexible conduit having its free end opening adjacent the plane occupied by the bottom of the lowest mold and providing means for removing water of condensation.

5. A vulcanizing heater comprising a shell to be used as a cylinder, a ram piston containing heat insulating material, a conduit for removing water of condensation, a channel near the upper end of the shell adapted to receive and carry-off the cooling water, and means for raising .and lowering said piston.

6. A vulcanizing heater as in claim 5, said shell being sectional.

7 A vulcanizing heater comprising a shell to be used as a cylinder, a heat insulating ram piston adapted to receive a plurality of molds, and a flexible conduit having a free end adjacent the upper surface of said ram piston.

In testimony whereof we have signed our names to the above s ecification.

, GE RGE J. MEAD.

GEORGE L. MATHER. 

